summaryrefslogtreecommitdiffstats
path: root/include/asm-parisc/atomic.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-parisc/atomic.h')
-rw-r--r--include/asm-parisc/atomic.h47
1 files changed, 31 insertions, 16 deletions
diff --git a/include/asm-parisc/atomic.h b/include/asm-parisc/atomic.h
index 66a0edbb51f..e894ee35074 100644
--- a/include/asm-parisc/atomic.h
+++ b/include/asm-parisc/atomic.h
@@ -6,6 +6,7 @@
#define _ASM_PARISC_ATOMIC_H_
#include <linux/types.h>
+#include <asm/system.h>
/*
* Atomic operations that C can't guarantee us. Useful for
@@ -174,14 +175,21 @@ static __inline__ int atomic_read(const atomic_t *v)
* Atomically adds @a to @v, so long as it was not @u.
* Returns non-zero if @v was not @u, and zero otherwise.
*/
-#define atomic_add_unless(v, a, u) \
-({ \
- __typeof__((v)->counter) c, old; \
- c = atomic_read(v); \
- while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
- c = old; \
- c != (u); \
-})
+static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
+{
+ int c, old;
+ c = atomic_read(v);
+ for (;;) {
+ if (unlikely(c == (u)))
+ break;
+ old = atomic_cmpxchg((v), c, c + (a));
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != (u);
+}
+
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
#define atomic_add(i,v) ((void)(__atomic_add_return( ((int)i),(v))))
@@ -283,14 +291,21 @@ atomic64_read(const atomic64_t *v)
* Atomically adds @a to @v, so long as it was not @u.
* Returns non-zero if @v was not @u, and zero otherwise.
*/
-#define atomic64_add_unless(v, a, u) \
-({ \
- __typeof__((v)->counter) c, old; \
- c = atomic64_read(v); \
- while (c != (u) && (old = atomic64_cmpxchg((v), c, c + (a))) != c) \
- c = old; \
- c != (u); \
-})
+static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
+{
+ long c, old;
+ c = atomic64_read(v);
+ for (;;) {
+ if (unlikely(c == (u)))
+ break;
+ old = atomic64_cmpxchg((v), c, c + (a));
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != (u);
+}
+
#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
#endif /* CONFIG_64BIT */